Quantum mechanics describes how the Universe behaves at very small scales, where particles don’t follow the neat, predictable rules we see in everyday life. Yet, in principle, quantum mechanics places no strict size limit on where superposition should stop working – which is exactly the tension Schrödinger was trying to expose. Such an interpretation would, in short, mean that our current understanding of quantum mechanics is incomplete and needs – scientifically – fudging. Physicists remain divided on whether there is a limit to quantum mechanics - Photo credit: GettyWithout experiments, there is no way to know which explanation is right. But philosophically, it means quantum mechanics is universal.”Read more: